Door control



Sept. 18, 1928. 1,684,704

' H. HUBBELL Y noon CONTROL Filed Jan. 1926 s sheets-sheet 1 LYI 'E.\' TOR.

)7? Z I TOR.\ E} s.

Se t; 18, 1928. 1,684,704

H. HUBBELL -DOOR CONTROL Filed Jan. 6, 1926 3 Sheets-Sheet 2 23 Z 27 [712,95 5 INVENTOR.

A TORNEYS.

Filed Jan. 6, 1926 55 Sheets-Sheet 3 IN V EN TOR.

A TTORNEYS.

Patented Sept. 18, 1928.

nirro stares Aren't o er HARVEY HULBBELL, OF BRII JG'EPORT, CONNECTICUT; LOUIE E. HUBB'ELL EXECUTRI OF SAID HARVEY l-IUBBELL, DECEASED.

noon CONTROL.

Application filed. January 6, 1926. Serial No. 79,619.

This invention relates to a control mocha nisin for doors. Often in public buildings, stores, office buildings and the like, relatively heavy doors are used and door checks are employed for closing the door after 1t has been opened. These checks are usually op' crated by springswhich must be fairly heavy to give the required strength for operating the door, and also must often be strong enough to close the door and hold it closed against heavy winds. It will be obvious that under these conditions it often requires considerable effort to open thedoor against the check, and it is often difficult for elderly per. sons or persons in a weakened condition to op erate the door.

It is, therefore, an object of my invention to provide a control mechanism which Wlll obviate these objections, and which will have means to render the check ineffective so as to allow the door to swing free when a person wishes to open the door.

It is also an object of the invention to provide a power means for operating the door, especially for moving it to the closed pOSltlQD, and to provide manually operated means for controlling this power means. 7

It is a further object of the invention to provide a check for the door which may opthe power means, and also a mechanism in which the power means may operate independently of the check, and both the check and power means will be controlled by manually operable means on the door.

\Vith the foregoing and other objects in view, I have devised the construction illus trated in the accompanying drawings forming a, part of this specification, similar reference characters being employed throughout. the various figures to indicate corresponding elements. In these drawings,

Fig. 1 is a front elevation of a door and'my improved control mechanism therefor, the door being in the closed position.

Fig. 2 is a top plan view showing the door in a partially open position, and operating under the control of the check. j I r Fig. 8 is a vertical section through the clutch mechanism.

Fig. 4 is a transverse section through the check device.

F ig. 5 is a vertical section through the same.

Fig. 6 is a top plan view showing the door crate in the usual manner independently of partially open and operating underthe control of the power device.

7 is a detail elevation ofone form of manual control.

Fig. 8 is a detail section through a portion of the door casing showing one of the control switches, and l Fig. 9 isa front elevation this switch. V V I In the drawings 10 represents an upright door mounted in a casing 11 to swing in a vertical plane on the hinges l2. Mounted on one side ofthe door, as the inside thereof, and adjacent the top edge, is a door check comprising a casing 13 mounted on the door by any suitable means, as the screws let, and this casing carries a convolute spring 15 secured at one end to the casing, and its other end is shown at 16 secured to a rotary sleeve 17. This sleeve has a ratchet l8 cooperating with a pawl 19 pivoted to the arm 20 mounted on the shaft 21, which shaft extends through the sleeve and a bearing 22 in the casing. The arm is rigid on the shaft so as to turn therewith. The'shaft is offset to provide a crank 23 connected by means of a rod 24 with a piston 25 mounted to reciprocate in the cylinder 26. A check valve 27 is mounted in the piston and the cylinder is provided with a bypass 28 around the piston and communicatmg with the cylinder on opposite sides of the piston,with a valve 29 to control the flow of liquid through the by-pass. This piston operates with oil in the cylinder'to form the usual dashpot to control the speed of operation of the check in the well-known manner. The arm 20 is connected by means of a link or rod 30 with an arm 31 which is rigidly secured on a shaft 32 mounted in stationary bearings 33 in a bracket 34; secured to the top of the door frame. This shaft also carries a gear 85 meshing with a pinion 36 mounted on a slidable shaft 3'7. This shaft 37 carries a sleeve 38 mounted between collars 39, the sleeve bein'gfree to rotate onthe shaft and also being slidably mounted in the bearings 40 on the bracket. The shaft 37 carries a se ries of clutch discs 41 in the casing 42 and of a portion of there are a series of discs 4L3'alternately arranged with the discs 11 and secured to the casing, which casing is mounted to rotate in a bearing 44. Secured to the casing is a worm gear 45 meshing with a worm 46 mounted on the armature shaft 47 of an ,elece trio motor d8. In thepresent construction I have shown an electric motor, but it will 54. A spring 55 embracesthi'sbar and reacts at its opposite ends against the intermediate bearing-54 and a collar 56 secured to'the bar so that the spring tends to shift the bar to its upper position. The bar also carries an arm 57 of insulating material which carries a contact 58 arranged to bridge the contact 59 which controls the flow of current 'to the motor 48. The bar 52 is connected'by means of a rod 60 with manually operable means mounted on the door. In the present construction this manually operable means comprises handles or'bars 61, one on each side of the door at proper height for convenient operation, and these bars are mounted on levers l52 pivoted to the door at 62'. The 1evers (52 of one set are provided with forks 63 interlocked with rounded heads 64 on the other set of levers .62-so that the two levers a'ndthe bars 61 will operate in unison, and the rod 60 is connected with-one of these levers, as the pivoted eye 65, so that this rod will'be operatedbyeither bar 61. j 7

There is a second control switch for themotor 4S which'is shown more in detail inFigs. 8 and 9, and is mounted in the top of the door casing. In theform shown it comprisesa movable switch. member 66 pivoted at 67 and is operated'with asnap action by means of a spring 68,.to and from engagement with the 1 stationary contacts 69 so as to bridge these contacts and close the circuit. The spring 68 is mounted on abar 70 which hassliding engagement-with the pivoted support '71 for the movable switch member, and this bar is pivoted at 72 to a reciprocating pin 73 which projects through the face plate 7 4 in position to be engaged by a finger 7 5 carried by the arm 31. A spring 76 is mounted on the pin 73 and tends to move it outwardly to swing the switch member 66 to the closedposit-lon.

It is to be noted that this switch is in series with the switch 58 controlledby the bars .61 so that inorder for the motor to ooerate both of these switches must he closed. 2 hen the door is in closed position the finger 75 will engage the pinf73and push-itinwardly so that the switch'66 is in the open position,

but assoon as the arm 31 swings outwardly away from'the door frame the spring 76 Will v push the pin '73 outwardly close the switch 66. v

The operation of the device is as follows: In 1 the door is shown' in closed posi tion, and in Fig. 6 it is shown in the closed position in dotted lines. If a party wishes of the cheek l3 and the-spring-l5 therein, the check under these conditions operating in the usual manner of this type of check. In 'otherwords, the person opening the door will force the door open a ainst the action of the check and as soon as he releases the door the spring of the eheckwill close it in the usual manner. During this operation the lever 31 controlled bythe motor 48 remains stationary V in the full line position shown in Fig. 2. and it maintains the switch 66 open by holding the pin 73 in its innermost position. This operation is indicated in Fig. 2, the only elements moving with the door being the check.

the arm20 and link 30; andthe spring 15 in the check operatingthrough the sleeve17 the pawl and ratchet 18 and .19, arm 20, and link 30 will swingthe door-to the closedposition assoon as it is.released. I v

Should a party wish to open the door either 'fromthe inside ,or the outside the usual operation is to grasp one of the bars 61 and push it downwardly. This operation throu h the rod 60,bar 52 and lever 50 willraise t 1e shaft 37 and release the clutch 42. Thiswill disconnect the shaftfromthe motor and will leave the arm v31 free to swing outwardly with the door. Therefore, the arm 31 "and the arm .20 of the check together with the to overcome only the weight of the door.

Due to the fact that thelaxis of the shaft 32 is not coincident-with theaxis of the'hinges about which thedoor swings therewill'be a very slight movement of'these arms during the movement of the door, but it is so slight as to have practically no effect on the operation of the door and it is'taken care of by provlding a bracket 7 Shaving an inclined guide 7 9 mounted on the top of the door which engages the outer side of a rollerSO carried by the arm 31 at the pivot77, This guide and roller also insures that the, arm 31 will not swing outwardly away from the door, and

also insures that the switch 66 is held open when thedoor is closed.

It will, of course,be apparentthat when the arm 31 swingsawayfrom the casingwith the door it will release the pin 73 allowing the spring 7 6 to close the switch 66, but this will not Operate the motorbecause the switch 58 was opened when the rod 60 was moved downwardly by operation of the bar 61. However, after the door is open and the bar 61 is released the spring 55 will move the bar 52 upwardly and close the switch58 and will engage the clutch 12. Both switches controlling the motor are now closed and the motor begins to operate, rotates the shaft and swlngs the arm 31 back tov its original position toward the casing, and of course swings the door with it to the closed position. As soon as thedoor isclosed the finger engages the pin 73 and opens the switch 66 and the door remains closed until the next operation, it, ofcourse, being held closed by the check device and the spring 15 therein cooperating with the arm 81 which is held stationary by the clutch. I 1

It will thus be apparent thatthe door is free to be operated against the check in the usual manner, and the check will operate in.

the usual manner to close the door as soon as the door is released. On the other hand if the person opening the door pushes clownwardly on one of the bars 61 the clutch 42 is disconnected and the check is rendered inef+ fective so that the door may be swung open independently of and free from the check without the necessity of overcoming the force of the spring in the check, but as soon as the bar 61 is released the motor 48 will operate to swing the door to the closed position. Thus I have produced a mechanism in which the door may be closed and kept closed under the operation of the check device in the usual manner, but I have provided means controlled by the usual operating handle for in effect disconnecting the check and rendering it ineffective during the opening movement of the door so that the operator is not required to overcome the force of this check device, but still there is a power means which will close the door as soonas the handle is released.

Having thus set forth the natureof my invention, what I claim is:

1. In combination, a movable door, a door check including a spring tending to move the door to closed position, and manually operable means carried by the door for rendering said check ineffective and permit the door to move independently thereof.

2. In combination, a movable door, a check including a spring tending to close the door,

manually operable means carried by the door for rendering said spring ineffective and allow the door to move independently thereof, and means for rendering said spring effective when the operators hand is removed from the manual means. Y

3. In combination, a movable door, a check for controlling the door including a pivoted arm mounted on the door and a spring tending to swingsaid arm about its pivot, a sta- I tionary support, an arm pivotally mounted on said support, a connection from the arm on the door to the arm on the'support, power means for swinging the arm on the support,

a movable handle on the door, and means con-.

trolled by said handle, for controlling the POWQI 111621118.

4:. In combination, a movable door, means for controlling the door including a pivoted stationary support, an arm pivotally mount ed on said support, aconnection from the arm on the door to the armon the support, a motor, a driving connection from the motor tothe second arm includinga clutch, a control means for the motor controlled by the second arm, a movable handle mounted on the door, a second control means for the motor, and a connection from saidhandle to the clutch and the second control means.

5. In combination, a movable door, means for controlling the door including a pivoted arm mounted on the door and a spring tending to swing said arm to close the door, a stationary support, an arm pivotally mounted on said support, a connection from the arm on the door to the arm on the support, an

electric motor, a driving connection from the motor to the second arm including a clutch, a switch for controlling the motor controlled by the second arm and arranged to be held open by said arm when the door is closed, means for closing said switch when the arm is moved from its normal position, a movable handle mounted on the door, a second switch in series with the'first switch, and an opera tive connection from the'handle to the clutch and the second switch.

6. In combination, a movable door, a check including a spring tending to close the door, manually operable means carried bythe door for rendering said spring ineffective and allow the door to move independently thereof, power means adapted to operate the door, and means operated by said manual means to control the operation of said power means.

7 In combination, a movable door, a check including a spring tending to close the door, means carried by the door for manual operation thereof, a-power means for operating the door, and means operable by the manual means for controlling the operation of the check and also the operation of the power means.

8. In combination, a movable door, a check including a spring tending to close the door,

manually operable means carried by the door for rendering said spring ineffective and allow the door to move independently there of, a motor adapted to mox e the door to closed position, and means operated by said manual means to control the operation of said motor; i

' 9. In combination, a movable door, a check] including a spring tending to close the door,

a motor, means operable by the motor cooperating w th said spring to permit said spring to function, a clutch drive between the motor andsaid means,'a'contr0l for the motor, and manuallyoperable-means carried by thedoor for controlling said clutch and said-control means.

10. In combination, a movable floor, a check including a spring mounted on the door, a motor mountedion astationarysup port, a clutch connection "from the motor with: said spring whereby the spring maybecome effective to close the door, saidconnection being also operable by the motor to o'lose 1 the door, a movable handleon the door, and 7 means controlled by said handle tor-controlling said clutch. r

11. In combination, a movable door, a

' check including a spring mounted on the controlled by thehandle for controlling said clutch, and acontrol switch for themotor operated by said handle. i

'12. In combination, a movable door, a

check including a springtendingto closet'he door, power means connected to the spring to operate the door through said spring, -:1

releasable driving connection between the power meansond-the spring, and manually operable means on the door for controlling said driving connection. In testimony whereof Iaflix my signature.

HARVEY HUBBEDL. 

